Not to worry about the Dems and/or Ron Paul. There are enough Republican politicians that based on their actions (or lack thereof), will push many conservatives to vote third party.
Voting third paarty is self-defeating and only keeps the fascists in power... historically third parties benefit the democrat in any election — the latest example is Norm Coleman and Al Franken, without a third party Coleman likely would have won and we wouldn’t have an idiot on his way to DC any day now.